Java tutorial
/* * Copyright 2015 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ package us.swcraft.springframework.session.messages; import java.util.AbstractMap; import org.springframework.util.Assert; /** * Immutable session attribute serialization request. */ public class AttributeSerializationRequest extends AbstractMap.SimpleImmutableEntry<String, Object> { private static final long serialVersionUID = 1L; public AttributeSerializationRequest(final String key, final Object value) { super(key, value); Assert.notNull(key, "Key can't be null"); Assert.notNull(key, "Value can't be null"); } @Override public String toString() { return new StringBuilder().append(this.getClass()).append("[").append(this.getKey()).append(this.getValue()) .append("]").toString(); } }